357 lines
8.8 KiB
C
357 lines
8.8 KiB
C
/*
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* Rectangle-related functions
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*
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* Copyright 1993, 1996 Alexandre Julliard
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*
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*/
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#include "winuser.h"
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/***********************************************************************
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* SetRect16 (USER.72)
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*/
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void WINAPI SetRect16( LPRECT16 rect, INT16 left, INT16 top,
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INT16 right, INT16 bottom )
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{
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rect->left = left;
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rect->right = right;
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rect->top = top;
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rect->bottom = bottom;
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}
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/***********************************************************************
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* SetRect32 (USER32.499)
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*/
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BOOL WINAPI SetRect( LPRECT rect, INT left, INT top,
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INT right, INT bottom )
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{
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rect->left = left;
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rect->right = right;
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rect->top = top;
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rect->bottom = bottom;
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return TRUE;
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}
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/***********************************************************************
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* SetRectEmpty16 (USER.73)
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*/
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void WINAPI SetRectEmpty16( LPRECT16 rect )
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{
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rect->left = rect->right = rect->top = rect->bottom = 0;
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}
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/***********************************************************************
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* SetRectEmpty32 (USER32.500)
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*/
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BOOL WINAPI SetRectEmpty( LPRECT rect )
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{
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rect->left = rect->right = rect->top = rect->bottom = 0;
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return TRUE;
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}
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/***********************************************************************
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* CopyRect16 (USER.74)
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*/
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BOOL16 WINAPI CopyRect16( RECT16 *dest, const RECT16 *src )
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{
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*dest = *src;
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return TRUE;
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}
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/***********************************************************************
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* CopyRect32 (USER32.62)
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*/
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BOOL WINAPI CopyRect( RECT *dest, const RECT *src )
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{
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*dest = *src;
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return TRUE;
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}
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/***********************************************************************
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* IsRectEmpty16 (USER.75)
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*/
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BOOL16 WINAPI IsRectEmpty16( const RECT16 *rect )
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{
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return ((rect->left == rect->right) || (rect->top == rect->bottom));
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}
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/***********************************************************************
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* IsRectEmpty32 (USER32.347)
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*/
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BOOL WINAPI IsRectEmpty( const RECT *rect )
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{
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return ((rect->left == rect->right) || (rect->top == rect->bottom));
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}
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/***********************************************************************
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* PtInRect16 (USER.76)
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*/
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BOOL16 WINAPI PtInRect16( const RECT16 *rect, POINT16 pt )
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{
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return ((pt.x >= rect->left) && (pt.x < rect->right) &&
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(pt.y >= rect->top) && (pt.y < rect->bottom));
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}
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/***********************************************************************
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* PtInRect32 (USER32.424)
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*/
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BOOL WINAPI PtInRect( const RECT *rect, POINT pt )
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{
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return ((pt.x >= rect->left) && (pt.x < rect->right) &&
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(pt.y >= rect->top) && (pt.y < rect->bottom));
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}
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/***********************************************************************
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* OffsetRect16 (USER.77)
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*/
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void WINAPI OffsetRect16( LPRECT16 rect, INT16 x, INT16 y )
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{
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rect->left += x;
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rect->right += x;
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rect->top += y;
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rect->bottom += y;
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}
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/***********************************************************************
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* OffsetRect32 (USER32.406)
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*/
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BOOL WINAPI OffsetRect( LPRECT rect, INT x, INT y )
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{
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rect->left += x;
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rect->right += x;
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rect->top += y;
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rect->bottom += y;
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return TRUE;
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}
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/***********************************************************************
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* InflateRect16 (USER.78)
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*/
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void WINAPI InflateRect16( LPRECT16 rect, INT16 x, INT16 y )
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{
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rect->left -= x;
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rect->top -= y;
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rect->right += x;
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rect->bottom += y;
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}
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/***********************************************************************
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* InflateRect32 (USER32.321)
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*/
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BOOL WINAPI InflateRect( LPRECT rect, INT x, INT y )
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{
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rect->left -= x;
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rect->top -= y;
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rect->right += x;
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rect->bottom += y;
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return TRUE;
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}
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/***********************************************************************
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* IntersectRect16 (USER.79)
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*/
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BOOL16 WINAPI IntersectRect16( LPRECT16 dest, const RECT16 *src1,
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const RECT16 *src2 )
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{
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if (IsRectEmpty16(src1) || IsRectEmpty16(src2) ||
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(src1->left >= src2->right) || (src2->left >= src1->right) ||
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(src1->top >= src2->bottom) || (src2->top >= src1->bottom))
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{
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SetRectEmpty16( dest );
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return FALSE;
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}
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dest->left = MAX( src1->left, src2->left );
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dest->right = MIN( src1->right, src2->right );
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dest->top = MAX( src1->top, src2->top );
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dest->bottom = MIN( src1->bottom, src2->bottom );
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return TRUE;
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}
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/***********************************************************************
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* IntersectRect32 (USER32.327)
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*/
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BOOL WINAPI IntersectRect( LPRECT dest, const RECT *src1,
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const RECT *src2 )
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{
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if (IsRectEmpty(src1) || IsRectEmpty(src2) ||
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(src1->left >= src2->right) || (src2->left >= src1->right) ||
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(src1->top >= src2->bottom) || (src2->top >= src1->bottom))
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{
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SetRectEmpty( dest );
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return FALSE;
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}
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dest->left = MAX( src1->left, src2->left );
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dest->right = MIN( src1->right, src2->right );
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dest->top = MAX( src1->top, src2->top );
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dest->bottom = MIN( src1->bottom, src2->bottom );
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return TRUE;
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}
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/***********************************************************************
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* UnionRect16 (USER.80)
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*/
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BOOL16 WINAPI UnionRect16( LPRECT16 dest, const RECT16 *src1,
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const RECT16 *src2 )
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{
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if (IsRectEmpty16(src1))
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{
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if (IsRectEmpty16(src2))
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{
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SetRectEmpty16( dest );
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return FALSE;
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}
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else *dest = *src2;
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}
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else
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{
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if (IsRectEmpty16(src2)) *dest = *src1;
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else
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{
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dest->left = MIN( src1->left, src2->left );
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dest->right = MAX( src1->right, src2->right );
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dest->top = MIN( src1->top, src2->top );
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dest->bottom = MAX( src1->bottom, src2->bottom );
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}
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}
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return TRUE;
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}
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/***********************************************************************
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* UnionRect32 (USER32.559)
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*/
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BOOL WINAPI UnionRect( LPRECT dest, const RECT *src1,
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const RECT *src2 )
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{
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if (IsRectEmpty(src1))
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{
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if (IsRectEmpty(src2))
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{
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SetRectEmpty( dest );
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return FALSE;
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}
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else *dest = *src2;
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}
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else
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{
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if (IsRectEmpty(src2)) *dest = *src1;
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else
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{
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dest->left = MIN( src1->left, src2->left );
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dest->right = MAX( src1->right, src2->right );
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dest->top = MIN( src1->top, src2->top );
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dest->bottom = MAX( src1->bottom, src2->bottom );
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}
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}
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return TRUE;
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}
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/***********************************************************************
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* EqualRect16 (USER.244)
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*/
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BOOL16 WINAPI EqualRect16( const RECT16* rect1, const RECT16* rect2 )
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{
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return ((rect1->left == rect2->left) && (rect1->right == rect2->right) &&
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(rect1->top == rect2->top) && (rect1->bottom == rect2->bottom));
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}
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/***********************************************************************
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* EqualRect32 (USER32.194)
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*/
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BOOL WINAPI EqualRect( const RECT* rect1, const RECT* rect2 )
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{
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return ((rect1->left == rect2->left) && (rect1->right == rect2->right) &&
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(rect1->top == rect2->top) && (rect1->bottom == rect2->bottom));
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}
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/***********************************************************************
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* SubtractRect16 (USER.373)
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*/
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BOOL16 WINAPI SubtractRect16( LPRECT16 dest, const RECT16 *src1,
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const RECT16 *src2 )
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{
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RECT16 tmp;
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if (IsRectEmpty16( src1 ))
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{
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SetRectEmpty16( dest );
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return FALSE;
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}
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*dest = *src1;
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if (IntersectRect16( &tmp, src1, src2 ))
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{
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if (EqualRect16( &tmp, dest ))
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{
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SetRectEmpty16( dest );
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return FALSE;
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}
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if ((tmp.top == dest->top) && (tmp.bottom == dest->bottom))
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{
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if (tmp.left == dest->left) dest->left = tmp.right;
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else if (tmp.right == dest->right) dest->right = tmp.left;
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}
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else if ((tmp.left == dest->left) && (tmp.right == dest->right))
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{
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if (tmp.top == dest->top) dest->top = tmp.bottom;
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else if (tmp.bottom == dest->bottom) dest->bottom = tmp.top;
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}
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}
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return TRUE;
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}
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/***********************************************************************
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* SubtractRect32 (USER32.536)
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*/
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BOOL WINAPI SubtractRect( LPRECT dest, const RECT *src1,
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const RECT *src2 )
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{
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RECT tmp;
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if (IsRectEmpty( src1 ))
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{
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SetRectEmpty( dest );
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return FALSE;
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}
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*dest = *src1;
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if (IntersectRect( &tmp, src1, src2 ))
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{
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if (EqualRect( &tmp, dest ))
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{
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SetRectEmpty( dest );
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return FALSE;
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}
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if ((tmp.top == dest->top) && (tmp.bottom == dest->bottom))
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{
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if (tmp.left == dest->left) dest->left = tmp.right;
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else if (tmp.right == dest->right) dest->right = tmp.left;
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}
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else if ((tmp.left == dest->left) && (tmp.right == dest->right))
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{
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if (tmp.top == dest->top) dest->top = tmp.bottom;
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else if (tmp.bottom == dest->bottom) dest->bottom = tmp.top;
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}
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}
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return TRUE;
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}
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